1# Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2# Copyright (c) 2014 Intel Corporation.
3#
4# Permission is hereby granted, free of charge, to any person obtaining
5# a copy of this software and associated documentation files (the
6# "Software"), to deal in the Software without restriction, including
7# without limitation the rights to use, copy, modify, merge, publish,
8# distribute, sublicense, and/or sell copies of the Software, and to
9# permit persons to whom the Software is furnished to do so, subject to
10# the following conditions:
11#
12# The above copyright notice and this permission notice shall be
13# included in all copies or substantial portions of the Software.
14#
15# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22
23import time, signal
24import pyupm_tm1637 as tm1637
25
26# Register exit handler for normal Ctrl+C exit
27def SIGINTHandler(signum, frame):
28    raise SystemExit
29signal.signal(signal.SIGINT, SIGINTHandler)
30
31# Create a display object on pins 0 CLK and 1 DIO
32display = tm1637.TM1637(0, 1)
33dots = True
34
35# Get local time
36myTime = time.localtime(time.time())
37print time.strftime("System time: %H:%M", myTime)
38print ("You can adjust your time zone by setting the TZ environment variable.")
39
40# Draw a box for 3 seconds using 7-segment encoding
41display.write(0x39, 0x09, 0x09, 0x0f)
42time.sleep(3)
43
44# Loop indefinitely
45while True:
46    # Update and display time
47    timeString = time.strftime("%H%M", time.localtime(time.time()))
48    display.write(timeString)
49    # Toggle colon
50    display.setColon(dots)
51    dots = not dots
52
53    # Sleep for 1 s
54    time.sleep(1)
55